cashflow, and what is the difference between cash inflows and outflows?

Cash flow is the movement of money into or out of a business, project, or financial product

cash inflow means the cash comesin to the company i.e,cash 
which has to come towards the company that amount is called 
cash inflow it includes revenue
the cash out flow means the amount or cash that which has 
to pay by the company i.e,the actual amount of cash which 
has to be go out from teh company that amount is called 
cash outflow it includes expenditure.